Year Percent 1996-01-01 1.2672000000000000 1997-01-01 1.1952500000000000 1998-01-01 1.1657700000000000 1999-01-01 0.9916170000000000 2000-01-01 1.3230000000000002 2001-01-01 1.1459700000000002 2002-01-01 1.7981500000000000 2003-01-01 1.3774700000000000 2004-01-01 0.9014090000000000 2005-01-01 0.7292100000000000 2006-01-01 0.7903710000000000 2007-01-01 0.7769920000000000 2008-01-01 0.7785340000000001 2009-01-01 0.8493149999999999 2010-01-01 0.8516410000000000 2011-01-01 0.9348520000000000 2012-01-01 1.0542500000000000 2013-01-01 1.1256700000000002 2014-01-01 1.0591800000000000 2015-01-01 1.1733600000000000 2016-01-01 1.2421799999999998